*{
	margin: 0;padding: 0;
}
html {
	font-family: "微软雅黑";font-size: 20px;
}
body {
	background: #000;
	background:url(../../example.jpeg) top left no-repeat;
}
p{
	width: 80%;margin: 100px auto 30px;line-height: 1.5;
}
button{
	width: 150px;
	height: 50px;
	background: orange;
	outline: none;
	border: none;
	cursor: pointer;
	border-radius: 10px;
	margin: 0 auto;
	display: block;
	font-size: 20px;
	font-family: "微软雅黑";
}